Sayyidah Aishah (may Allah be pleased with her) said: We would take out the shank of a goat after fifteen days and eat it. The narrator says: I asked: Why did you do that? She laughed and said: The family of Muhammad (peace and blessings be upon him) never ate their fill of bread with condiment for three days until he met Allah, the Mighty and Majestic.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 13315